Microsoft Windows Server 2022

Windows Server 2022 User Account Control (UAC) must be configured to detect application installations and prompt for elevation

STIG ID: WN22-SO-000420 |   SRG: SRG-OS-000134-GPOS-00068 |   Severity: Medium |   CCI: CCI-001084 |   Vulnerability ID: V-254486

Description

UAC is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting requires Windows to respond to application installation requests by prompting for credentials.

Check

C-57971r849272_chk

UAC requirements are NA for Server Core installations (this is the default installation option for Windows Server 2022 versus Server with Desktop Experience).If the following registry value does not exist or is not configured as specified, this is a finding:Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\Value Name: EnableInstallerDetectionValue Type: REG_DWORDValue: 0x00000001 (1)

Fix

F-57922r849273_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> User Account Control: Detect application installations and prompt for elevation to "Enabled".